void Compute()
{
material.color = defaultColor;
Graphics.Blit(a, b, material);
if (blitInner)
{
material.color = innerColor;
GraphicUtil.BlitExceptBorder(a, b, material);
}
if (blitBorder)
{
material.color = borderColor;
GraphicUtil.BlitBorder(a, b, material);
}
}
public void SolvePoisson(
RenderTexture x, RenderTexture b,
int iterations, float alpha, float beta,
System.Action <RenderTexture, RenderTexture> applyBoundaryCondition = null)
{
var buffers = new RenderTexture[]
{
RenderTexture.GetTemporary(x.width, x.height, 0, RenderTextureFormat.ARGBFloat),
RenderTexture.GetTemporary(x.width, x.height, 0, RenderTextureFormat.ARGBFloat)
};
solverMat.SetFloat("_Alpha", alpha);
solverMat.SetFloat("_ReciprocalBeta", 1.0f / beta);
solverMat.SetTexture("_BTex", b);
Graphics.SetRenderTarget(buffers[0]);
GL.Clear(true, true, Color.black);
Graphics.SetRenderTarget(null);
int index = 0;
for (int i = 0; i != iterations; ++i)
{
if (applyBoundaryCondition != null)
{
applyBoundaryCondition(buffers[index % 2], buffers[(index + 1) % 2]);
index++;
}
GraphicUtil.BlitExceptBorder(buffers[index % 2], buffers[(index + 1) % 2], solverMat);
++index;
}
Graphics.Blit(buffers[index % 2], x);
RenderTexture.ReleaseTemporary(buffers[0]);
RenderTexture.ReleaseTemporary(buffers[1]);
}
